1. Six stroke petrol engine
by
Naveen kumar . R ( b.e mechanical 2nd year)
avs engineering college salem
2. content
INTRODUCTION
HOW SIX STROKES ENGINE WORKS
WORKING PRINCIPLES
SPECIFICATION OF SIX STROKES ENGINE
COMPARISON OF SIX STROKES ENGINE WITH FOUR STROKES ENGINE
How to calculate the engine cc
GRAPHS
ADVANTAGE
DISADVANTAGE
CONCLUSION
3. INTRODUCTION
The six stroke engine is a type of the internal combustion engine based on the four stroke , but with
additional complexity intended to make it more efficient and reduse emissions . Two types of six-stroke
engine have been developed since the 1890s
Malcolm beare built an innovative hybrid design of the ic engine , by combining a two stroke with a four
stroke engine
It is combination of the four stroke and two stroke technology has given the engine its name ” six stroke
engine”
4. How to calculate the engine cc
If the bore is 10 cm and the stroke is 5 cm with 4 cylinder
Bore means size if the engine
cc = π/4 * (bore)2 * stroke
* no.of the cylinder
cc = π/4 *(10 cm )2 * 5 *4
= 1570 cc
6. HOW SIX STROKES ENGINE WORKS ? .
THE SIX STROKES ENGINE IS BASED ON THE FOUR STROKES ENGINE BUT EXTRA TWO STROKES ARE ADDED TO THE SIX
STROKES ENGINE
THE PISTON MOVES DOWN TO SUCK IN AIR AND FUEL , THEN THE FUEL PUSHES UP TO COMPRESS , THEN THE SPARKPLUG
FIRES AND THE BURINING GAS FORCES THE PISTON DOWN . THEN THE PISTON MOVES BACK UP TO PUSH UP TO EXHAUST .
THE SIX STROKES ENGINE ADDS TWO MORE STROKES AFTER EXHAUST STROKES . WATER IS INJECTED AND AS IT TURNS
IN TO STEAM , IT PUSHES THE PISTON DOWN . THEN PISTON COMES TO BACK UP TO FORCES OUT THE STEAM
7.
8. Fifth stroke
During the fifth stroke , exhaust value remains open and the reed values closes . Fresh air from the air filter
entrance the cylinder through the secondary air induction line provided at the exhaust manifold . The reed
value opens .
9. Six stroke
During the six stroke , the exhaust value remains open . The air is
sucked into the cylinder during the fifth stroke is removed to
atmosphere through the exhaust manifold
The reed value opens and the reed value closes
11. Single piston designs
These designs use a single piston per cylinder, like a conventional two- or four-stroke engine.
A secondary, non-detonating fluid is injected into the chamber, and the leftover heat from combustion causes
it to expand for a second power stroke followed by a second exhaust stroke.
12. Opposed piston designs
These designs use two pistons per cylinder operating at different rates, with detonation occurring between
the pistons.
13. Camshaft / crankshaft SPROCKET
The crankset (in the US) or chainset (in the UK), is the component of a bicycle drivetrain that converts the
reciprocating motion of the rider's legs into rotational motion used to drive the chain or belt, which in turn
drives the rear wheel. It consists of one or more sprockets, also called chainrings or chainwheels attached to
the cranks, arms, or crankarms to which the pedals attach. It is connected to the rider by the pedals, to the
bicycle frame by the bottom bracket, and to the rear sprocket, cassette or freewheel via the chain.
17. ADVANTAGE
Thermal efficient reaching 50 %
Fuel consumption reduced by more than 40 %
Cost is economical compare to 4 stroke .
Due to more air intake , the cooling system is improved .
Less inertia due to lightness of moving parts .
Multifuels (diesel , l . P . G , petrol & methanol-petrol mixture etc .
18. DISADVANTAGE
Engine size increases due to many number of the cylinder and additional component .
Break power & indicate power per cycle per cylinder is comparatively lesser .
19. conclusion
In six stroke engine energy absorption is less because of slower acceleration of reciprocating parts .
Increased torque and power output .
For normal six stroke car engine mileage for 4-5 liter is 100km .
In four stroke engine for ever 2 complete rotation of crankshaft fuel ignition takes place , but in six stroke
fuel ignition takes place for every 3 complete rotation of crank shaft .
